As energy costs continue to rise and environmental concerns take centre stage, installing energy efficient windows in Lancashire has become a top priority for builders and developers. At Great Harwood Windows, we’re committed to helping trade professionals deliver sustainable solutions through our premium Omnia window range.
Understanding Omnia Windows’ Energy Performance

Superior U Values and Thermal Efficiency
Omnia windows lead the market with exceptional U values as low as 1.2 W/m²K with double glazing and 0.79 W/m²K with triple glazing, significantly exceeding current Building Regulations requirements. These advanced frames feature:
- Multi chambered profiles for enhanced insulation
- Double rebated frames
- Co extruded gaskets
- Advanced weather seals
Glazing Options for Maximum Performance
When you add Omnia windows to your products portfolio, your customers can enjoy energy-saving window solutions that include:
- Double glazing with argon gas filling
- Triple glazing configurations
- Low E glass coatings
- Solar control options for south-facing installations
Installation Best Practices

A successful Omnia window installation requires a skilled and experienced installation specialist. When installing Omnia windows, consider the following points for a professional finish.
Preparation and Survey
Before installation, ensure:
- Accurate aperture measurements
- Structural assessment of existing openings
- Checking for potential thermal bridges
- Planning appropriate drainage and ventilation
Airtightness and Sealing
Proper sealing is essential for achieving optimal thermal performance:
- Use expanding foam sealants
- Install compression gaskets
- Apply appropriate weather seals
- Ensure continuous DPC integration
Condensation Control Measures
Managing condensation is essential for long-term performance:
- Implement suitable trickle ventilation
- Consider glazing specifications based on room usage
- Install drainage channels correctly
- Provide adequate room ventilation guidance to end users
Sustainability Benefits
When you offer your customers Omnia windows, you are helping to promote sustainability by creating more energy efficient homes. Our Lancashire window installations contribute to:
- Reduced heating costs
- Lower carbon emissions
- Improved EPC ratings
- Enhanced building comfort
Certification and Compliance
Fully accredited and compliant windows are an important consideration for any trade glazing professional. Omnia windows meet or exceed:
- PAS 24 security standards
- Document L Building Regulations
- BS 6375 weather performance requirements
- BFRC energy ratings
Summary
Installing energy-efficient Omnia windows requires attention to detail and proper technique. Following these guidelines ensures optimal performance and customer satisfaction. As your trusted Lancashire window supplier, Great Harwood Windows provides comprehensive support throughout the specification and installation process.
Contact our trade team today to discuss your sustainable building projects and discover how our energy-efficient window solutions can benefit your business. You can also download the latest Omia brochure to find out more about the window range.
For technical support or to arrange a consultation, call us on 01254 690 009 or email info@greatharwoodwindows.co.uk.